package net.esj.basic.core.view.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.esj.basic.core.view.tools.AgentContext;
import net.esj.basic.utils.SessionKeyConstants;

import org.springframework.beans.factory.annotation.Autowired;

public abstract class AbstractCookieLoginFilter implements Filter {

	AgentContext agentContext;
	
	@Override
	public void destroy() {

	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;
		
		if(request.getSession().getAttribute(getKey())!=null){
			arg2.doFilter(request, response);
			return;
		}

		String cookie = agentContext.getCookieValue(getKey(), true);

		invoke(arg0, arg1, arg2,cookie);

		arg2.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
	}

	protected String getKey(){
		return SessionKeyConstants.NORMAL_USER;
	}

	@Autowired
	public void setAgentContext(AgentContext agentContext) {
		this.agentContext = agentContext;
	}
	
	protected abstract void invoke(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2,String cookie);
}
